Added option to invert thumbnails in dark mode

src-ui/src/app/components/document-list/document-card-large/document-card-large.component.html

@@ -1,7 +1,7 @@
 <div class="card mb-3 shadow-sm" [class.card-selected]="selected" [class.document-card]="selectable">
   <div class="row no-gutters">
     <div class="col-md-2 d-none d-lg-block doc-img-background rounded-left" [class.doc-img-background-selected]="selected" (click)="this.toggleSelected.emit($event)">
-      <img [src]="getThumbUrl()" class="card-img doc-img border-right rounded-left">
+      <img [src]="getThumbUrl()" class="card-img {{ getIsThumbInverted() ? 'doc-img-inverted' : 'doc-img' }} border-right rounded-left">
 
       <div style="top: 0; left: 0" class="position-absolute border-right border-bottom bg-light p-1" [class.document-card-check]="!selected">
         <div class="custom-control custom-checkbox">

src-ui/src/app/components/document-list/document-card-large/document-card-large.component.scss

@@ -4,7 +4,7 @@
   overflow-wrap: anywhere;
 }
 
-.doc-img {
+.doc-img, .doc-img-inverted {
   object-fit: cover;
   object-position: top left;
   height: 100%;

src-ui/src/app/components/document-list/document-card-large/document-card-large.component.ts

@@ -2,6 +2,7 @@ import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
 import { DomSanitizer } from '@angular/platform-browser';
 import { PaperlessDocument } from 'src/app/data/paperless-document';
 import { DocumentService } from 'src/app/services/rest/document.service';
+import { SettingsService, SETTINGS_KEYS } from 'src/app/services/settings.service';
 
 @Component({
   selector: 'app-document-card-large',
@@ -10,7 +11,7 @@ import { DocumentService } from 'src/app/services/rest/document.service';
 })
 export class DocumentCardLargeComponent implements OnInit {
 
-  constructor(private documentService: DocumentService, private sanitizer: DomSanitizer) { }
+  constructor(private documentService: DocumentService, private sanitizer: DomSanitizer, private settingsService: SettingsService) { }
 
   @Input()
   selected = false
@@ -53,6 +54,10 @@ export class DocumentCardLargeComponent implements OnInit {
   ngOnInit(): void {
   }
 
+  getIsThumbInverted() {
+    return this.settingsService.get(SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED)
+  }
+
   getDetailsAsString() {
     if (typeof this.details === 'string') {
       return this.details.substring(0, 500)

src-ui/src/app/components/document-list/document-card-small/document-card-small.component.html

@@ -1,7 +1,7 @@
 <div class="col p-2 h-100">
   <div class="card h-100 shadow-sm document-card" [class.card-selected]="selected">
     <div class="border-bottom doc-img-container" [class.doc-img-background-selected]="selected" (click)="this.toggleSelected.emit($event)">
-      <img class="card-img doc-img rounded-top" [src]="getThumbUrl()">
+      <img class="card-img {{ getIsThumbInverted() ? 'doc-img-inverted' : 'doc-img' }} rounded-top" [src]="getThumbUrl()">
 
       <div class="border-right border-bottom bg-light p-1 rounded document-card-check">
         <div class="custom-control custom-checkbox">

src-ui/src/app/components/document-list/document-card-small/document-card-small.component.scss

@@ -1,6 +1,6 @@
 @import "/src/theme";
 
-.doc-img {
+.doc-img, .doc-img-inverted {
   object-fit: cover;
   object-position: top left;
   height: 200px;

src-ui/src/app/components/document-list/document-card-small/document-card-small.component.ts

@@ -2,6 +2,7 @@ import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
 import { map } from 'rxjs/operators';
 import { PaperlessDocument } from 'src/app/data/paperless-document';
 import { DocumentService } from 'src/app/services/rest/document.service';
+import { SettingsService, SETTINGS_KEYS } from 'src/app/services/settings.service';
 
 @Component({
   selector: 'app-document-card-small',
@@ -10,7 +11,7 @@ import { DocumentService } from 'src/app/services/rest/document.service';
 })
 export class DocumentCardSmallComponent implements OnInit {
 
-  constructor(private documentService: DocumentService) { }
+  constructor(private documentService: DocumentService, private settingsService: SettingsService) { }
 
   @Input()
   selected = false
@@ -32,6 +33,10 @@ export class DocumentCardSmallComponent implements OnInit {
   ngOnInit(): void {
   }
 
+  getIsThumbInverted() {
+    return this.settingsService.get(SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED)
+  }
+
   getThumbUrl() {
     return this.documentService.getThumbUrl(this.document.id)
   }

src-ui/src/app/components/manage/settings/settings.component.html

@@ -96,6 +96,7 @@
           <div class="col">
             <app-input-check i18n-title title="Use system settings" formControlName="darkModeUseSystem"></app-input-check>
             <app-input-check [hidden]="settingsForm.value.darkModeUseSystem" i18n-title title="Enable dark mode" formControlName="darkModeEnabled"></app-input-check>
+            <app-input-check i18n-title title="Invert Thumbnails in dark mode" formControlName="darkModeInvertThumbs"></app-input-check>
           </div>
         </div>
 

src-ui/src/app/components/manage/settings/settings.component.ts

@@ -21,6 +21,7 @@ export class SettingsComponent implements OnInit {
     'documentListItemPerPage': new FormControl(this.settings.get(SETTINGS_KEYS.DOCUMENT_LIST_SIZE)),
     'darkModeUseSystem': new FormControl(this.settings.get(SETTINGS_KEYS.DARK_MODE_USE_SYSTEM)),
     'darkModeEnabled': new FormControl(this.settings.get(SETTINGS_KEYS.DARK_MODE_ENABLED)),
+    'darkModeInvertThumbs': new FormControl(this.settings.get(SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED)),
     'useNativePdfViewer': new FormControl(this.settings.get(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER)),
     'savedViews': this.savedViewGroup,
     'displayLanguage': new FormControl(this.settings.getLanguage()),
@@ -74,6 +75,7 @@ export class SettingsComponent implements OnInit {
     this.settings.set(SETTINGS_KEYS.DOCUMENT_LIST_SIZE, this.settingsForm.value.documentListItemPerPage)
     this.settings.set(SETTINGS_KEYS.DARK_MODE_USE_SYSTEM, this.settingsForm.value.darkModeUseSystem)
     this.settings.set(SETTINGS_KEYS.DARK_MODE_ENABLED, (this.settingsForm.value.darkModeEnabled == true).toString())
+    this.settings.set(SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED, (this.settingsForm.value.darkModeInvertThumbs == true).toString())
     this.settings.set(SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER, this.settingsForm.value.useNativePdfViewer)
     this.settings.set(SETTINGS_KEYS.DATE_LOCALE, this.settingsForm.value.dateLocale)
     this.settings.set(SETTINGS_KEYS.DATE_FORMAT, this.settingsForm.value.dateFormat)

src-ui/src/app/services/settings.service.ts

@@ -21,6 +21,7 @@ export const SETTINGS_KEYS = {
   DOCUMENT_LIST_SIZE: 'general-settings:documentListSize',
   DARK_MODE_USE_SYSTEM: 'general-settings:dark-mode:use-system',
   DARK_MODE_ENABLED: 'general-settings:dark-mode:enabled',
+  DARK_MODE_THUMB_INVERTED: 'general-settings:dark-mode:thumb-inverted',
   USE_NATIVE_PDF_VIEWER: 'general-settings:document-details:native-pdf-viewer',
   DATE_LOCALE: 'general-settings:date-display:date-locale',
   DATE_FORMAT: 'general-settings:date-display:date-format',
@@ -36,6 +37,7 @@ const SETTINGS: PaperlessSettings[] = [
   {key: SETTINGS_KEYS.DOCUMENT_LIST_SIZE, type: "number", default: 50},
   {key: SETTINGS_KEYS.DARK_MODE_USE_SYSTEM, type: "boolean", default: true},
   {key: SETTINGS_KEYS.DARK_MODE_ENABLED, type: "boolean", default: false},
+  {key: SETTINGS_KEYS.DARK_MODE_THUMB_INVERTED, type: "boolean", default: false},
   {key: SETTINGS_KEYS.USE_NATIVE_PDF_VIEWER, type: "boolean", default: false},
   {key: SETTINGS_KEYS.DATE_LOCALE, type: "string", default: ""},
   {key: SETTINGS_KEYS.DATE_FORMAT, type: "string", default: "mediumDate"},

src-ui/src/theme_dark.scss

@@ -138,6 +138,16 @@ $border-color-dark-mode: #47494f;
   }
 
   .doc-img {
+    mix-blend-mode: normal;
+    border-radius: 0;
+    border-color: $bg-dark-mode;
+
+    &.border-right {
+      border-right: none !important;
+    }
+  }
+
+  .doc-img-inverted {
     mix-blend-mode: normal;
     filter: invert(95%) hue-rotate(180deg);
     border-radius: 0;
@@ -148,7 +158,7 @@ $border-color-dark-mode: #47494f;
     }
   }
 
-  .card-selected .doc-img {
+  .card-selected .doc-img .doc-img-inverted {
     mix-blend-mode: luminosity;
   }